A Scottish airport has announced a multi-million pound investment to improve its terminal building.

Aberdeen Airport plans to spend £5m on a major expansion of the terminal.

The work will be part of a £45m programme of work earmarked for the airport over the next nine years.

An airport spokeswoman said the project will improve passenger facilities and provide more capacity.

The terminal expansion, for the international arrivals area, is due to be completed by 2019.

The programme of work also includes £3m to boost capacity within the terminal and expand the security search area, and the opening of a £750,000 car rental facility.

Aberdeen Airport was the fastest growing airport in the UK last year, among airports which handle more than 500,000 passengers annually, with passenger numbers up by 11.5%.

Derek Provan, managing director, said: "Our aim is to continue to provide high standards of service.

"To achieve this, we plan to increase our capacity to take account of forecast passenger growth, and modernise our facilities to deliver a better service to passengers, airlines and other airport users.

"Aberdeen Airport has enjoyed sustained growth over the past 12 months and our longer term forecasts suggest that this trend will continue.

"It is vital that we continue to invest in our facilities to create an airport that befits Aberdeen's status as the energy capital of Europe."

More than £50m has been invested in Aberdeen Airport over the past five years, including £10 million on a 124-metre runway extension.